In the past few months IE10, Firefox 16 and Opera 12.1 have all been released, and all have removed the vendor pre­fix from the four gradi­ent prop­er­ties: linear-gradient, repeating-linear-gradient, radial-gradient, and repeating-radial-gradient. As a res­ult, all of the examples in Chapter 11 now use the new syn­tax. Only the WebKit-based browsers are yet to imple­ment the final syntax.

— 23 November, 2012

This page lists errata from the book (hope­fully not too much!), changes to the spe­cific­a­tions since pub­lic­a­tion, and brand new features.